AMETROPIA Meaning and
Definition
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Ametropia is a medical term used to describe an abnormality in the way that the eyes focus light onto the retina, resulting in impaired vision. It is a refractive error that occurs when the length of the eye or the shape of the cornea does not match the ideal optical power needed for proper vision.
This condition is typically caused by unequal curvatures of the cornea or lens, or an abnormal shape of the eyeball leading to light not being properly focused onto the retina. As a result, individuals with ametropia may experience blurred vision, difficulty in focusing at certain distances, or a combination of both.
Ametropia encompasses three main types: myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. Myopia occurs when the eyeball is longer than usual or the cornea is too curved, causing distant objects to appear blurry. Hyperopia, on the other hand, is characterized by an eyeball that is shorter than normal or a cornea that is too flat, leading to nearby objects appearing blurry. Astigmatism is characterized by an irregularly shaped cornea, causing blurred vision at all distances.
A proper diagnosis of ametropia can be made by an eye care professional through comprehensive eye examination and the use of various tests, including refraction measurements and visual acuity testing. Corrective measures for ametropia generally involve prescription eyeglasses, contact lenses, or refractive surgery, such as LASIK, to optimize vision and mitigate the impact of the refractive error.
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A condition in which there is some error of refraction in consequence of which parallel rays, with the eye at rest, are not focussed on the retina, but either in front of it (myopia) or behind it (hyperopia).
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for AMETROPIA
- zmetropia
- smetropia
- wmetropia
- qmetropia
- anetropia
- aketropia
- ajetropia
- amwtropia
- amstropia
- amdtropia
- amrtropia
- am4tropia
- am3tropia
- amerropia
- amefropia
- amegropia
- ameyropia
- ame6ropia
- ame5ropia
- ameetropia
Etymology of AMETROPIA
The word "ametropia" comes from the Greek roots "a-" meaning "without" or "not", and "metron" meaning "measure" or "proportion". In combination, "a-" and "metron" form "ametron", which represents the inability or lack of proper measurement or proportion. This root is then combined with the Greek word "opsis", meaning "vision" or "sight", to form "ametropia", which refers to the condition of abnormal or imperfect vision.
Similar spelling words for AMETROPIA
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